diff --git a/lama_cleaner/plugins/__init__.py b/lama_cleaner/plugins/__init__.py
index d912a0a..87ae130 100644
--- a/lama_cleaner/plugins/__init__.py
+++ b/lama_cleaner/plugins/__init__.py
@@ -1,3 +1,4 @@
 from .interactive_seg import InteractiveSeg, Click
 from .remove_bg import RemoveBG
 from .realesrgan import RealESRGANUpscaler
+from .gif import MakeGIF
diff --git a/lama_cleaner/plugins/base_plugin.py b/lama_cleaner/plugins/base_plugin.py
new file mode 100644
index 0000000..39d7491
--- /dev/null
+++ b/lama_cleaner/plugins/base_plugin.py
@@ -0,0 +1,15 @@
+from loguru import logger
+
+
+class BasePlugin:
+    def __init__(self):
+        err_msg = self.check_dep()
+        if err_msg:
+            logger.error(err_msg)
+            exit(-1)
+
+    def __call__(self, rgb_np_img, files, form):
+        ...
+
+    def check_dep(self):
+        ...
diff --git a/lama_cleaner/plugins/gif.py b/lama_cleaner/plugins/gif.py
index 3f69901..d9921c3 100644
--- a/lama_cleaner/plugins/gif.py
+++ b/lama_cleaner/plugins/gif.py
@@ -4,6 +4,7 @@ import math
 from PIL import Image, ImageDraw
 
 from lama_cleaner.helper import load_img
+from lama_cleaner.plugins.base_plugin import BasePlugin
 
 
 def keep_ratio_resize(img, size, resample=Image.BILINEAR):
@@ -117,7 +118,7 @@ def make_compare_gif(
                 [(right, 0), (right, height)], width=splitter_width, fill=splitter_color
             )
         images.append(new_frame)
-        
+
     for _ in range(30):
         images.append(clean_img)
 
@@ -135,7 +136,7 @@ def make_compare_gif(
     return img_byte_arr.getvalue()
 
 
-class MakeGIF:
+class MakeGIF(BasePlugin):
     name = "MakeGIF"
 
     def __call__(self, rgb_np_img, files, form):
diff --git a/lama_cleaner/plugins/interactive_seg.py b/lama_cleaner/plugins/interactive_seg.py
index 4f0c21c..8fe5720 100644
--- a/lama_cleaner/plugins/interactive_seg.py
+++ b/lama_cleaner/plugins/interactive_seg.py
@@ -1,5 +1,4 @@
 import json
-import json
 import os
 from typing import Tuple, List
 
@@ -14,6 +13,7 @@ from lama_cleaner.helper import (
     load_jit_model,
     load_img,
 )
+from lama_cleaner.plugins.base_plugin import BasePlugin
 
 
 class Click(BaseModel):
@@ -195,10 +195,11 @@ INTERACTIVE_SEG_MODEL_MD5 = os.environ.get(
 )
 
 
-class InteractiveSeg:
+class InteractiveSeg(BasePlugin):
     name = "InteractiveSeg"
 
     def __init__(self, infer_size=384, open_kernel_size=3, dilate_kernel_size=3):
+        super().__init__()
         device = torch.device("cpu")
         model = load_jit_model(
             INTERACTIVE_SEG_MODEL_URL, device, INTERACTIVE_SEG_MODEL_MD5
diff --git a/lama_cleaner/plugins/realesrgan.py b/lama_cleaner/plugins/realesrgan.py
index 6652764..6876b82 100644
--- a/lama_cleaner/plugins/realesrgan.py
+++ b/lama_cleaner/plugins/realesrgan.py
@@ -4,6 +4,7 @@ import cv2
 from loguru import logger
 
 from lama_cleaner.helper import download_model
+from lama_cleaner.plugins.base_plugin import BasePlugin
 
 
 class RealESRGANModelName(str, Enum):
@@ -15,7 +16,7 @@ class RealESRGANModelName(str, Enum):
 RealESRGANModelNameList = [e.value for e in RealESRGANModelName]
 
 
-class RealESRGANUpscaler:
+class RealESRGANUpscaler(BasePlugin):
     name = "RealESRGAN"
 
     def __init__(self, name, device):
@@ -84,7 +85,7 @@ class RealESRGANUpscaler:
 
     def __call__(self, rgb_np_img, files, form):
         bgr_np_img = cv2.cvtColor(rgb_np_img, cv2.COLOR_RGB2BGR)
-        scale = float(form['upscale'])
+        scale = float(form["upscale"])
         logger.info(f"RealESRGAN input shape: {bgr_np_img.shape}, scale: {scale}")
         result = self.forward(bgr_np_img, scale)
         logger.info(f"RealESRGAN output shape: {result.shape}")
@@ -94,3 +95,9 @@ class RealESRGANUpscaler:
         # 输出是 BGR
         upsampled = self.model.enhance(bgr_np_img, outscale=scale)[0]
         return upsampled
+
+    def check_dep(self):
+        try:
+            import realesrgan
+        except ImportError:
+            return "RealESRGAN is not installed, please install it first. pip install realesrgan"
diff --git a/lama_cleaner/plugins/remove_bg.py b/lama_cleaner/plugins/remove_bg.py
index e380bfd..15dfc5b 100644
--- a/lama_cleaner/plugins/remove_bg.py
+++ b/lama_cleaner/plugins/remove_bg.py
@@ -1,11 +1,14 @@
 import cv2
 import numpy as np
 
+from lama_cleaner.plugins.base_plugin import BasePlugin
 
-class RemoveBG:
+
+class RemoveBG(BasePlugin):
     name = "RemoveBG"
 
     def __init__(self):
+        super().__init__()
         from rembg import new_session
 
         self.session = new_session(model_name="u2net")
@@ -20,3 +23,11 @@ class RemoveBG:
         # return BGRA image
         output = remove(bgr_np_img, session=self.session)
         return output
+
+    def check_dep(self):
+        try:
+            import rembg
+        except ImportError:
+            return (
+                "RemoveBG is not installed, please install it first. pip install rembg"
+            )
diff --git a/lama_cleaner/server.py b/lama_cleaner/server.py
index ead7190..7216410 100644
--- a/lama_cleaner/server.py
+++ b/lama_cleaner/server.py
@@ -1,28 +1,26 @@
 #!/usr/bin/env python3
 
+import imghdr
 import io
 import logging
 import multiprocessing
 import os
 import random
 import time
-import imghdr
 from pathlib import Path
-from typing import Union
-from PIL import Image
 
 import cv2
-import torch
 import numpy as np
+import torch
+from PIL import Image
 from loguru import logger
 
 from lama_cleaner.const import SD15_MODELS
+from lama_cleaner.file_manager import FileManager
 from lama_cleaner.model.utils import torch_gc
 from lama_cleaner.model_manager import ModelManager
-from lama_cleaner.plugins import InteractiveSeg, RemoveBG, RealESRGANUpscaler
-from lama_cleaner.plugins.gif import MakeGIF
+from lama_cleaner.plugins import InteractiveSeg, RemoveBG, RealESRGANUpscaler, MakeGIF
 from lama_cleaner.schema import Config
-from lama_cleaner.file_manager import FileManager
 
 try:
     torch._C._jit_override_can_fuse_on_cpu(False)